body {
    height: calc(100vh - 40px);
    margin:0;
    padding:20px;
    background:#eef2f9;
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    flex-wrap:wrap;
    align-content: space-around;
}

.panel {
    width:400px;
    height: 200px;
    background: #fff;
    border: 1px solid #5a5d64;
    border-radius: 6px;
    padding: 10px 20px;
    
}